diff options
| author | Michael Neuling <mikey@neuling.org> | 2018-01-09 03:52:05 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-10 01:46:34 +1100 |
| commit | 191eccb1580939fb0d47deb405b82a85b0379070 (patch) | |
| tree | f4f63e9ea0c79e6aee248837d94215089da44a6a /arch/powerpc/include/asm/plpar_wrappers.h | |
| parent | ae64f9bd1d3621b5e60d7363bc20afb46aede215 (diff) | |
powerpc/pseries: Add H_GET_CPU_CHARACTERISTICS flags & wrapper
A new hypervisor call has been defined to communicate various
characteristics of the CPU to guests. Add definitions for the hcall
number, flags and a wrapper function.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/plpar_wrappers.h')
| -rw-r--r-- | arch/powerpc/include/asm/plpar_wrappers.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h index 7f01b22fa6cb..55eddf50d149 100644 --- a/arch/powerpc/include/asm/plpar_wrappers.h +++ b/arch/powerpc/include/asm/plpar_wrappers.h @@ -326,4 +326,18 @@ static inline long plapr_signal_sys_reset(long cpu) return plpar_hcall_norets(H_SIGNAL_SYS_RESET, cpu); } +static inline long plpar_get_cpu_characteristics(struct h_cpu_char_result *p) +{ + unsigned long retbuf[PLPAR_HCALL_BUFSIZE]; + long rc; + + rc = plpar_hcall(H_GET_CPU_CHARACTERISTICS, retbuf); + if (rc == H_SUCCESS) { + p->character = retbuf[0]; + p->behaviour = retbuf[1]; + } + + return rc; +} + #endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */ |